Improvement in shoemakers  edge-planes



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ARTHUR P. HAZARD, 0F NORTH 'BRIDGEWATER MASSACHUSETTS.

Letters Patent N 107 ,491, dated-Saltwater 20, 1870.

IMPROVEMENT IN SHOEMAKERS EDGE-PLANES.

The Schedule referred to in th'ese Letters Patent and making part of thesame To all persons to whom these presents may come:

Be it known that L ARTHUR l. HAZARD, of North Bridgewater, in the countyot' Plymouth and State of Massachusetts, have invented anew and usefulImprovement in Shoemakers Edge-Planes; and I do hereby declare the sameto be fully described in the following specification and represented inthe accompanying-drawing, of which- Figure 1 denotes a side elevation;

Figure 2, a longitudinal section, l

Figure 3, a front end elevation and Figure 4, a rear end elevation of ashoemakers edge-plane, as constructed in accordance with my iuvention.

My present invention, like that patented by me on A the 19th day ot'July, A. D. 1870, relates to that class of devices termed edge-moldin gplanes,7 as employed by shoemalrers in forming and molding the edges ofboots and shoes, in which the lnolding-edge or part ot` the implement isformed in two portions, one of which is on the cutter, and the other onthe guard; and

My present invention consists in a peculiar mode of applying theadjustable guard to the implement, whereby the guard, as the cutterbecomes worn, may be so moved toward the cutter as not only to preservethe cutting-edge of the latter, iu due relation to the guard, to enableit to take o the desiredthickuess of shaving, but to so bring intocorrespondence the molding-surface ofthe guard as to cause it tomaintain its normal or proper curvature, with respect to themolding-surface of the cutter, in order that both the molding-surface ofthe cutter and that of the" guard may rest* in contactwith the -edge ofVa sole while being reduced.

Edge-molding planes, as heretofore constructed with a cutter and amovable gua-rd, have possessed no certain, reliable, and accurate meansby which the guard,l

as the cutter' becomes worn, could be so accurately adj usted as topreserve its due relations with respect to the cutter and itsmoldinglsurface, but, as the edge of the cutter became more or lessworn, and the guard was moved toward it to compensate l'or the wear, therequisite and nice correspondence of the moldingsurface of the guard andthat of the cutter was destroyed, as neithera vertical Ynor a horizontalmovement of the-guard alone can bring it into its true relative positionwith theedge of the cutter and its molding-surface. To accomplish thisresult it became necessary to take the implement to the factory forreadjustment or tiling away of the parts, to enable them to be broughtinto their normal or relative correspond ence. l

To provide a simple and effective means by which a Shoemaker or workman,as -the cutter becomes worn, 'can readily so adjust the guard withrespect to the cutting-edge and molding-surface of the cutter as topreserve all the parts in their due correspondence 'nntil the cutterbecomes worn out or unfit for use, is'the object of my invention.

In the said drawing- A denotes thc stock ot' the said implement, thesame being made of a block or piece of steel, and having an acuteangular cutter, B, formed on its lower part, as shown in figs. 1 and 2.

' C denotes the throat or chip-passage the same extending transverselythrough the tool, as shownin the drawing.

D is the tang, which extends up from the stock into the handle E.

F is the adjustable guard, which has the form, as shown in gs. 1, 2, and3, and is attached to the side or scarfed face of the stock A -by meansof two screws, l) b', arranged in different horizontal planes, and whichpass through slots, e c', made in the stock, and screw into t-hc guard;or the slots may be made in the shank of the guard, and the screwspassed through themintn the stock.

These slots I make of a slightly curved, elongated form, and of a widthsomewhat greater than the diamcter of the Shanks of the screws.

l By meansof these screws and slots a compound increment can be given tothe guard, whereby .the guard may not only be readily adjusted to theedge of the cutter, but the curvedA molding-surface of' the guard can beeasily and accurately. adjustedto the desired degree of curvature, tooperate to the best advantage with the curved molding-surface of thecutter, and so that each part shall have a firm bea-ring upon the edgeof the sole to be reduced or mold; ed, whereby the tool is not only rmlysupported, and enabled to cut an even shaving from the edge ot' thesole, but, at thc same time, to more or less condense and polish it.

In adjusting the guard in its proper position with respect to thecutter, I first bring the scarfed edge c of the guard to bear on thescnrted edge of the cut.- ter, andwith the molding-surlce oftheguard alittle above the molding-surface oi' the cutter, and fasten the screw b.I

`Nefit, to adjust the guard at the proper distance. from the edge of thecutter, we have simply'to move the contiguous part of the guard awayfrom the edge o t' the cutter a distancelcquai tov the thickness of theshaving we desire to remove, and tighten the screw b', and the tool isready for use. j

I do not claim, in a sole-edge plane provided with acutter and a movableguard, making the guard thereof adjustable in a singlev plane, whethervertical o1' horizontal, as I am aware that such is not new.

Nor do I claim attaching the guard to the shank or stock in manuel' asshown in Letters Patent Nos. 20,882 or 27,840, as such will not effectthe result attained by my invention.

What I claim as my invention is- My improved'sole-edge plane, having itsmovable guard applied to the stock A byl means of the screws b b', andthe slots c c', as described, the same enabling the said guard to beadjusted with respect to the edge-of the eutteraud its molding-surface,yin manner and for the purpose set forth.

ARTHUR P. HAZARD.

Witnesses i F. I. HALE, ISAAC Lowe.

